Update Helm release loki to v6.50.0 (#3353)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [loki](https://grafana.github.io/helm-charts) ([source](https://github.com/grafana/helm-charts)) | minor | `6.49.0` → `6.50.0` |

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> ⚠️ **Warning**
>
> Some dependencies could not be looked up. Check the Dependency Dashboard for more information.

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### Configuration

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi42OS4yIiwidXBkYXRlZEluVmVyIjoiNDIuNjkuMiIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOlsiY2hhcnQiXX0=-->

Reviewed-on: #3353
Co-authored-by: Renovate Bot <renovate-bot@alexlebens.net>
Co-committed-by: Renovate Bot <renovate-bot@alexlebens.net>

clusters/cl01tl/helm/loki/Chart.lock

@@ -1,9 +1,9 @@
 dependencies:
 - name: loki
   repository: https://grafana.github.io/helm-charts
-  version: 6.49.0
+  version: 6.50.0
 - name: alloy
   repository: https://grafana.github.io/helm-charts
   version: 1.5.2
-digest: sha256:169af5a754de8ab848da0de07e5990a5a47de91252f27d12e5e4f672cfa62e59
-generated: "2026-01-13T17:02:14.361658012Z"
+digest: sha256:a2a5812a730c813cb46482d4c44ae3b9491d6152ffa8685c52a042335f65a4ae
+generated: "2026-01-21T21:08:11.643819027Z"

clusters/cl01tl/helm/loki/Chart.yaml

@@ -16,7 +16,7 @@ maintainers:
   - name: alexlebens
 dependencies:
   - name: loki
-    version: 6.49.0
+    version: 6.50.0
     repository: https://grafana.github.io/helm-charts
   - name: alloy
     version: 1.5.2